Methods of making and using improved microporous hollow fibers, the improved hollow fibers and tube bundles constructed of the improved fibers
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United States of America Patent
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Nov 2, 1993
Grant Date -
N/A
app pub date -
Oct 2, 1990
filing date -
Oct 2, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The processes of the invention enable depositable PFSA to be provided overhe entire inner surface of hollow fibers. Additionally, the processes of this invention provide a fiber which is coated by a thin coating of PFSA which is approximately 5-40 .mu.m thick. The fiber can advantageously withstand pressure gradients between 20-75 psig throughout its wall before leakage.
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